International Federation of Digital Seismograph Networks

Network Codes

The following network codes are assigned by the FDSN to facilitate unique identifiers for seismological data streams.

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Network Code Network Name Operated By Deployment DOI
4A (2008-2008) Investigating mechanisms of subglacial hydrology and basal shear stress beneath Whillans Ice Stream using passive seismology
DOI
4A (2009-2009) Emersito Seismic Network for Site Effect Studies in L'Aquila town (Central Italy)
DOI
4A (2010-2011) Darfield RAMP Aftershock Deployment, NZ
DOI
4A (2012-2014) Pollino Seismic Experiment
DOI
4A (2016-2019) SP Crater Network
DOI
4A (2020-2020) Imaging Yellowstone's shallow Magma Reservoir
DOI
4A (2021-2021) Kamara Mine Network DOI
4A (2022-2024) Mapping the structure of the Duluth Complex & Animikie Basin
DOI
4A (2025-2026) ASSESSMENT OF THE GEOTHERMAL POTENTIAL OF THE ALTO GUADIANA TERRITORY ON THE BASIS OF TECTONIC AND HYDROGEOLOGICAL OBSERVATIONS DOI
4B (2008-2009) TASK FORCE KIRGISTAN
4B (2010-2015) Raft River EGS United States of America
4B (2016-2018) ANR-Remake Quito basin
DOI
4B (2019-2020) iTarg3T
DOI
4B (2021-2021) El Paso Iglesias DOI
4B (2022-2022) Seismometer to Investigate Ice and Ocean Structure (SIIOS) Field Experiment: Lake Europa, Greenland
DOI
4B (2023-2026) Seismic Network Around Kangaroo Eyre Yorke DOI
4C (2005-2010) Semipalatinsk Test Site Network Kazakhstan
4C (2011-2014) NERA-JRA1-A
DOI
4C (2015-2015) GeoGirls outreach experiment at Mount St. Helens
4C (2016-2016) Summer of Applied Geophysical Experience Active Seismic 2016
DOI
4C (2017-2019) TIPTIMON AFGHANISTAN 2
DOI
4C (2020-2024) Inter-Wind
DOI
4C (2025-2027) TEC-HERITAGE DOI
4D (1985-2009) Seismological Experiments on Swiss Glaciers Switzerland DOI
4D (2010-2011) Parkfield Experiment to Record Microseismicity and Tremor
4D (2012-2030) Swiss temporary deployments on glaciers Switzerland DOI
4E (2010-2011) MARS/Testing of cabled broadband OBS using MARS test facility
DOI
4E (2012-2013) G9
4E (2015-2016) Field Research Station broadband seismometer network
DOI
4E (2018-2018) Raton 3C Nodes 2018
DOI
4E (2019-2019) Valles 3C Node Transect
DOI
4E (2020-2021) Nodal seismic experiment at the Berkeley section of the Hayward fault DOI
4E (2022-2023) Antarctica Ice Rift Experiment
DOI
4E (2024-2024) VECTOR seismic array in the Lausitz, Germany DOI
4E (2025-2025) Prototyping Alaska Coastal Arrays DOI
4F (2007-2011) Askja 2007
DOI
4F (2013-2014) Temp-CNCH
DOI
4F (2015-2025) North Texas Earthquake Study: Venus (Johnson County), TX
DOI
4G (2007-2030) EMSO-Azores
DOI
4H (2009-2010) EAL1
DOI
4H (2011-2012) Nabro Urgency Array
DOI
4H (2014-2017) Oklahoma State University Seismic Network
DOI
4H (2018-2021) Mulhouse Seismo Citizen
4H (2022-2022) Embayment Seismic Excitation Experiment 2022
DOI
4H (2023-2023) USGS Bald Eagle Sackung DOI
4H (2024-2024) Rapid nodal deployment after the April 5, 2024 New Jersey earthquake
DOI
4H (2025-2025) Deployment of 200 nodal instruments in western MA as part of the New England Seismic Transects (NEST) project
DOI
4I (2010-2019) Brady Hot Spring EGS United States of America
4I (2020-2050) RASPY DOI
4J (2014-2016) AQ3 SW Queensland and NW New South Wales
DOI
4J (2017-2024) Red sísmica Bioko
DOI
4J (2025-2025) UNDERCOVER large-N Array Finland
4K (2014-2016) UAE transects across the Semail Ophiolite
DOI
4K (2017-2022) Ruegen Cliff Observatory
DOI
4K (2023-2023) Mount Rainier 2023
DOI
4K (2024-2024) Fiordland Seismological Sounding of Landslides and Earthquakes (FISSLE) DOI
4L (2014-2016) IMAGE Reykjanes
DOI
4L (2017-2019) Canoe Reach Geothermal Field
DOI
4L (2020-2022) Bedload Monitoring of Ephemeral Streams 2022 Nodal Portion
DOI
4L (2023-2025) Tenerife-Gran Canaria Seismic Network (GUANCHE_INTEGRAL) DOI
4M (2016-2016) GEODES SP Crater Active Seismic Experiment 2016
DOI
4M (2018-2019) Los Angeles Basin Seismic Experiment
DOI
4M (2022-2027) Seismic Campaign Around the Lombardian Pass network DOI
4N (2017-2022) China-Western Australia Seismic array
DOI
4N (2023-2023) Fast Response Aftershock network for the Moroccan Earthquake 2023 DOI
4N (2024-2025) 4N - New Jersey 2024 Earthquake Sequence DOI
4O (2018-2020) Longmen P
DOI
4O (2022-2023) Sandia DAS DOI
4O (2024-2025) Aeolian Islands Network
4O (2026-2028) 4O DOI
4P (2006-2018) NSF EarthScope USArray Magnetotelluric Transportable and Backbone Arrays DOI
4P (2019-2019) Mpala wildlife 2019
4P (2020-2021) Carnegie Washington Backyard Network DOI
4P (2022-2026) AdriaArray Temporary Network: Italy - north, south
4Q (2017-2018) Dover, Delaware Aftershock Nodal Deployment DOI
4Q (2019-2021) GFZ contribution to the COSEISMIQ seismic network DOI
4Q (2022-2022) WHOLESCALE survey at San Emidio, Nevada, USA
DOI
4Q (2023-2025) Receiver Function and Seismotectonics Analysis Northern Chile DOI
4R (2018-2020) SEA-SEIS (Structure, Evolution And SEISmicity of the Irish offshore)
4R (2021-2021) Tower Lake area, in western Canada. DOI
4R (2022-2027) GEOREAL DOI
4S (2018-2018) STAK
DOI
4S (2019-2020) Active seismic imaging of a leaky CO2 fault system
DOI
4S (2022-2023) Serra La Nave Distributed Acoustic Sensing Experiment (Etna) DOI
4S (2024-2025) SUBMERSE OBS deployment in SW Iberia, Portugal DOI
4T (2018-2099) Texas Seismological Network
DOI
4U (2018-2019) Dry Alluvium Geology Gradiometry
DOI
4U (2022-2023) São Jorge OBS Network DOI
4U (2024-2024) Fagnano fault Unveiled: Earthquake and Geodetic Observations, Tierra de Fuego, Chilean Patagonia DOI
4V (2011-2020) Towards ocean wave energy-potential quantification from a terrestrially-based seismic observation system (Wave-Obs) DOI
4V (2022-2023) Aurora Vent Field Gakkel Ridge DOI
4V (2024-2024) France 2024, Fouillouse earthquake swarm projet - Nodal seismic array in the Upper Ubaye Valley (French Alps) DOI
4V (2025-2025) Eastern extension of DZA short-term seismic network in the Lausitz DOI
4W (2018-2019) Copiapo DOI
4W (2022-2023) Coupling erosion, weathering, and hydrologic function in an active orogenic system
DOI
4W (2025-2029) 4W DOI
4X (2021-2023) GEObyIT seismic network in Oslo, Norway DOI
4Y (2022-2023) Unraveling the microseismic activity of the Puerto Aldea Fault, Chile DOI
4Z (2021-2022) Melbourne - ALiRT nodal deployment DOI
4Z (2023-2023) Boise Geothermal Summer Camp
DOI

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